Generate Captcha with normal image format via php
composer require carry0987/captchaSet option for SimpleCaptcha:
$captcha_option = array(
'code' => '',
'image_height' => 60,
'image_width' => 250,
'captcha_letter' => 'bcdfghjkmnpqrstvwxyz23456789',
'font_file' => dirname(__DIR__).'/font/monofont.ttf',
'text_color' => '#142864',
'noise_color' => '#142864',
'total_character' => 6,
'random_dots' => 50,
'random_lines' => 25,
'check_sensitive' => false
);The captcha code is compared case insensitively by default
If you want case sensitive match, update the option check_sensitive from false to true
